Gambling in the US is legal on a federal level, but regulations vary by state. Generally, you can gamble in the US when you are of legal age, which is usually 21. Some states allow gambling at 18 for specific activities like the lottery. It’s important to check the laws in your state before participating in any form of gambling. Casinos, racetracks, and online platforms offer opportunities to gamble in the US. Always gamble responsibly and within the limits of the law.